To simplify the lock screen even further than iOS 7 managed to do, check out a new free jailbreak tweak called TabLess by iOS developer william_vab.

As shown above, TabLess removes the Notification Center and Control Center grabbers from the top and the bottom of the Lock Screen in iOS 7. Notably, although the grabbers are hidden from view, you can still pull down to reveal Notification Center, or pull up to reveal Control Center. This is merely a cosmetic change.

With the grabbers hidden from view, the Lock Screen looks less cluttered. In addition, paired with the recently released Simplock jailbreak tweak for iOS 7, TabLess makes your Lock Screen appear minimalistic and lightweight:

To give the tweak a try, you can head over the ModMyi repository in Cydia and give it a download. TabLess has no options to configure.

Wow, the lockscreen looks much cleaner now!
Hope we can have a tweak to add a black statusbar background, so the statusbar items doesn't have to keep changing from black to white, white to black.
Or a tweak that makes the status bar items smaller on the lockscreen, still don't get why the statusbar items are so big on the lockscreen.